Lock-nut.



J. I. BOYCE.-

LOGK NUT..

APPLIOATION FILED APR.22,1908.

Patented Apr. 6, 1909.

Smwntor c/Zmws I. Baya 'T r yr'ri m a:

wr t.

Specification of Letters Patent.

Application ra a Ap 22, 1908- Io all whom it may concern:

it known that I, Janus I. Boron, a citizen of the United States,residing at Leechburg, in the county of Armstrong and State ofiennsylvania, have invented new and useful Improvements in Loch-Nuts, ofwhich the foliowing is a specification.

This invention relates to lock nuts, and the object oi the invention isto provide an extremely simple and ei'licient device whereby a nut ofthe ordinary construction may be effectively retained. in lockedposition upon a bolt also of the ordinary construction.

Another object of the invention is to pro vide a device, the parts ofwhich are so constructcd and arranged as to readily retain a bolt inlocked position upon a nut whether the bolt'or nut be applied to a metalor wooden surface.

With these objects in view the invention resides in the novelconstruction of elements, hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a perspective view of a nutlock constructed in accordance with the present invention, showing thenut in position upon the bolt and in a position to be engaged by the segments provided by the washer 9. Fig. 2 is a similar view illustratingthe nut in locked position. Fig. 3 is a front elevation of Fig. 2. Fig.4 is a sectional view upon the line 4*4. of Fig. 3, the bolt 1 and nut 2being illustrated in side elevation. Fig. 5 is a cross sectional viewillustrating the detent in engaging position. Fig. is a perspective viewof the washer 9. Fig. 7 1s a detail perspective view of the washer 3.Fig. 8 is a detail perspective view of the detent.

in the accompanying drawings the numeral 1 designates a threaded bolt ofordinary construction, and the numeral 2 designates the nut adapted tocooperate with the bolt.

In securing the nut upon the bolt when connecting iron plates asillustrated in l of the drawings, 1 provide a washer 3 having a centralorifice 4 adapted for the reception of the bolt 1, and havin itsperiphery provided with diametrically opposite oil sets or recesses 5,the purpose of which will hereinaiter be described. The washer 3 is alsoprovided with a ii-shaped slotor opening 6, adapted for the reception ofa V-shaped de- Patented April 6, 1909.

Serial No. 428, 558.

the iron plate. The washer 8 constructed 3 preferably oi soft iron, andthe detent 8 is constructed i tool steel. in applying the washer to theplate, the washer is first fitted over the bolt 1 and positionedadjacent the plate to which it is to be secured. The detent 8 ispositioned within the slot 6 and given a violent blow with a hammer soas to insure its insertion within the plate. When the washer 3 is thuspositioned upon the plate, i provide a second washer 9, havingdiametrically positioned lugs 10 adapted for engagement with the cutaway portions 5 of the washer 3, and a central orifice 11, by which itis positioned upon the bolt 1 adjacent the washer 3. The washer 9 isconstructed of soft steel or other desired metal, and is provided uponits periphery with slits 12. The nut :2 is screwed upon the bolt 1 untilit tightly engages the washer 9, forcing the said washer into tightengagement with the washer 3 and likewise pressing the washer 3 againstthe plate which it engages. i l ixen the nut 2 is screwed home theperipheral ments of the washer 9 provided by the slits 12- are bentupward to form retaining tongues, as clearly illustrated in the figuresof the drawings, and the said tongues are adapted to lie against thesides of the nut 2 and thus ei'l ectively prevent the nut from turningupon the bolt 1.

From the above description it will be seen that I have provided asimple, cheap and effective device for securely locking nuts and. boltsagainst rotation, one which may be readily applied to metal or woodenplates, and which. is readily applicable to nuts and. bolts of theordinary construction.

in order to provide means whereby an instrument may be inserted betweenthe members 3 and 9 when it is desired to bend the tongues 9 outwardlyupon the nut 2 the innor edges of the said tongues 9 are under cut orinclined as at 14, thus providing a sub stantial opening between themembers 3 and 9 whereby the said tongues may be easily and quickly bentupon the nut.

Having thus fully described the invention what is claimed as new is:

The combination with a threaded bolt and nut therefor, of a plate havingrecesses and a V-shaped opening, a ti-shaped detent for the openinghaving its apex projecting beyond I against the sides of the nut to1prevent the the inner face of the plate, a Washer having rotation ofthe nut upon the b0 10 lugs adapted to engage the recesses of the i Intestimony whereof I aiiiX my signature plate, the washer being providedupon its in presence of two Witnesses.

body with slits extending inwardly from its JAMES I. BOYCE. periphery,the segments provided by the Witnesses:

slits having their peripheral faces inclined, FRANK TAYLOR,

and said segments adapted to be bent CHARLES E. ROSENSTEEL:

